From Brin. Among his most important ideas. I've linked to Brin before saying roughly the same thing. Is wisdom increasing or decreasing over time.
The deep positive core of the progressive vision is that life has been getting better nearly monotonically for at least the last 500 years in the Anglo-world, and most of the Anglo-influenced world...AND that we should expect it to continue...AND that we should look to the future, not the past for truth/wisdom.
I agree (p ~= 90%).